INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.7 on date 22-09-2018 and time 01:26:29 (Italy) in region Costa Calabra nord occidentale (Cosenza)

A magnitude ML 1.7 earthquake occured in region: Costa Calabra nord occidentale (Cosenza), on

  • 21-09-2018 23:26:29 (UTC)
  • 22-09-2018 01:26:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.49, 15.85 at 82 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Cetraro CS 8 10128 10128
Acquappesa CS 9 1907 12035
Bonifati CS 12 2858 14893
Guardia Piemontese CS 13 1911 16804
Sangineto CS 14 1338 18142
Belvedere Marittimo CS 14 9371 27513
Fuscaldo CS 18 8140 35653
Sant'Agata di Esaro CS 18 1890 37543
Fagnano Castello CS 19 3885 41428

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NW of Cosenza (67546 inhabitants)
70 Km NW of Lamezia Terme (70714 inhabitants)
91 Km NW of Catanzaro (90612 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.7 2018-09-21
23:26:29
39.49 15.85 82 2018-09-21
23:35:20
Sala Sismica INGV-Roma 61191521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-21 23:26:29 ± 0.22
Latitude 39.49 ± 0.01
Longitude 15.85 ± 0.04
Depth (km) 82 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61191521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3433
Semi-minor axis of confidence ellipse (meter) 513
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 3430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.08723
Epicentral distance of station farthest from the epicenter (degree) 0.88493
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 61191521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-21 23:35:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.CUC.HHZ. 2018-09-21T23:26:53.73 0.3 undecidable manual S 357 0.5027 141 -0.08 76
IV.CAR1.HHZ. 2018-09-21T23:26:51.76 0.3 undecidable manual S 130 0.366 150 -0.19 77
IV.CET2.HHZ. 2018-09-21T23:26:49.77 0.3 undecidable manual S 65 0.0872 172 -0.01 83
IV.JOPP.HHZ. 2018-09-21T23:26:47.12 0.3 undecidable manual P 178 0.8849 123 -0.24 68
IV.MTSN.HHN. 2018-09-21T23:26:45.87 0.3 undecidable manual P 354 0.7779 127 -0.28 68
IV.BULG.HNE. 2018-09-21T23:26:45.67 0.3 undecidable manual P 328 0.6907 131 0.46 68
IV.MGR.HNE. 2018-09-21T23:26:45.26 0.3 undecidable manual P 341 0.6853 131 0.1 73
IV.SIRI.HNE. 2018-09-21T23:26:45.02 0.3 undecidable manual P 1 0.6898 131 -0.19 71
IV.TDS.HHZ. 2018-09-21T23:26:43.07 0.3 undecidable manual P 66 0.4101 147 0.41 72
MN.CUC.HHZ. 2018-09-21T23:26:43.29 0.1 undecidable manual P 357 0.5027 141 -0.12 100
IV.CAR1.HHZ. 2018-09-21T23:26:42.31 0.3 undecidable manual P 130 0.366 150 -0.03 79
IV.CET2.HHZ. 2018-09-21T23:26:41.22 0.3 undecidable manual P 65 0.0872 172 0.14 81
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAR1.HHN. ML:1.6 4.29E-5 1.62 AML other m 2018-09-21T23:26:52.84
IV.CAR1.HHE. ML:1.7 6.245E-5 0.34 AML other m 2018-09-21T23:26:52.48
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download